<template>
  <div class="list"  ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">
              {{ this.currentCity }}
            </div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
            >
            <div class="button">
              {{ item.name }}
            </div>
          </div>
        </div>
      </div>
      <div class="area"
        v-for="(item,key) of cities"
        :key="key"
        :ref="key"
      >
        <div class="title border-topbottom">{{ key }}</div>
        <div class="item-list"
          v-for="itemInline of item"
          :key="itemInline.id"
          >
          <div
            class="item border-bottom"
            @click="handleCityClick(itemInline.name)"
          >{{ itemInline.name }}</div>
        </div>
      </div>

    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  props: {
    cities: Object,
    hot: Array,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper, {
      click: true
    })
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-rightbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    position absolute
    overflow hidden
    top 1.58rem
    left 0
    right 0
    bottom 0
    .title
      line-height .54rem
      background #EEEEEE
      padding-left .2rem
      color #666
      font-size .26rem
    .button-list
      overflow hidden
      padding .1rem .6rem .1rem .1rem
      .button-wrapper
        float left
        width 33.33%
      .button
        margin .1rem
        padding .1rem 0
        text-align center
        border .02rem solid #ccc
        border-radius .06rem
    .item-list
      .item
        line-height .54rem
        padding-left .2rem
</style>
